package com.itheima.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.constant.MessageConstant;
import com.itheima.entity.Result;
import com.itheima.service.MemberService;
import com.itheima.service.ReportService;
import com.itheima.service.SetmealService;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * @PackageName: com.itheima.controller
 * @ClassName: ReportController
 * @Author: Solomon
 * @Date: 2020/7/15 3:17
 * @Description:
 */
@RestController
@RequestMapping("/report")
public class ReportController {

    @Reference
    private MemberService memberService;

    @Reference
    private SetmealService setmealService;

    @Reference
    private ReportService reportService;

    //会员数量折线图数据
    @RequestMapping("/getMemberReport")
    public Result getMemberReport() {
        //返回页面的总的数据集合
        Map<String, Object> map = new HashMap();
        //12个月份的集合
        List<String> months = new ArrayList<>();

        //获得日历对象,默认当前系统时间
        Calendar calendar = Calendar.getInstance();
        //获得当前时间往前推12个月的时间
        calendar.add(Calendar.MONTH, -12);
        //循环12次，就获得12个月份信息
        for (int i = 0; i < 12; i++) {
            //获得当前时间往后推一个月日期
            calendar.add(Calendar.MONTH, 1);
            Date date = calendar.getTime();
            //months中存放的是过去的12个月份
            months.add(new SimpleDateFormat("yyyy.MM").format(date));
        }
        map.put("months", months);
        //根据月份去查会员数量
        List<Integer> memberCount = memberService.findMemberCountByMonth(months);
        map.put("memberCount", memberCount);
        return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS, map);
    }

    //预约套餐饼形图占比
    @RequestMapping("/getSetmealReport")
    public Result getSetmealReport() {
        //返回到页面的总的数据map
        Map<String,Object> data = new HashMap<>();
        //套餐名称和统计数的集合
        try {
            List<Map<String,Object>> setmealCount = setmealService.findSetmealCount();
            data.put("setmealCount",setmealCount);
            //从上面的list集合中获取到套餐名称的集合
            List<String> setmealNames = new ArrayList<>();

            for (Map<String, Object>  map: setmealCount) {
                String name = (String) map.get("name");
                setmealNames.add(name);
            }
            data.put("setmealNames",setmealNames);

            return new Result(true,MessageConstant.GET_SETMEAL_COUNT_REPORT_SUCCESS,data);
        } catch (Exception e) {
            return new Result(false,MessageConstant.GET_SETMEAL_COUNT_REPORT_FAIL);
        }
    }

    //运营数据统计
    @RequestMapping("/getBusinessReportData")
    public Result getBusinessReportData(){
        try {
            Map<String,Object> data = reportService.getBusinessReportData();
            return new Result(true,MessageConstant.GET_BUSINESS_REPORT_SUCCESS,data);
        } catch (Exception e) {
            return new Result(false,MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }

    //运营数据导出Excel
    @RequestMapping("/exportBusinessReport")
    public Result exportBusinessReport(HttpServletRequest request, HttpServletResponse response) {
        try {
            //运营数据
            Map<String, Object> result = reportService.getBusinessReportData();

            //取出返回结果数据，准备将报表数据写入到Excel文件中
            String reportDate = (String) result.get("reportDate");
            Integer todayNewMember = (Integer) result.get("todayNewMember");
            Integer totalMember = (Integer) result.get("totalMember");
            Integer thisWeekNewMember = (Integer) result.get("thisWeekNewMember");
            Integer thisMonthNewMember = (Integer) result.get("thisMonthNewMember");
            Integer todayOrderNumber = (Integer) result.get("todayOrderNumber");
            Integer thisWeekOrderNumber = (Integer) result.get("thisWeekOrderNumber");
            Integer thisMonthOrderNumber = (Integer) result.get("thisMonthOrderNumber");
            Integer todayVisitsNumber = (Integer) result.get("todayVisitsNumber");
            Integer thisWeekVisitsNumber = (Integer) result.get("thisWeekVisitsNumber");
            Integer thisMonthVisitsNumber = (Integer) result.get("thisMonthVisitsNumber");
            List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");

            //动态获取模板文件的绝对路径
            String filePath = request.getSession().getServletContext().getRealPath("template") + File.separator + "report_template.xlsx";

            //基于提供的excel模板文件在内存中创建一个excel表格对象
            XSSFWorkbook workbook = new XSSFWorkbook(new FileInputStream(new File(filePath)));
            //读取第一个工作薄
            XSSFSheet sheet = workbook.getSheetAt(0);

            XSSFRow row = sheet.getRow(2);
            row.getCell(5).setCellValue(reportDate);//日期

            row = sheet.getRow(4);
            row.getCell(5).setCellValue(todayNewMember);//新增会员数（本日）
            row.getCell(7).setCellValue(totalMember);//总会员数

            row = sheet.getRow(5);
            row.getCell(5).setCellValue(thisWeekNewMember);//本周新增会员数
            row.getCell(7).setCellValue(thisMonthNewMember);//本月新增会员数

            row = sheet.getRow(7);
            row.getCell(5).setCellValue(todayOrderNumber);//今日预约数
            row.getCell(7).setCellValue(todayVisitsNumber);//今日到诊数

            row = sheet.getRow(8);
            row.getCell(5).setCellValue(thisWeekOrderNumber);//本周预约数
            row.getCell(7).setCellValue(thisWeekVisitsNumber);//本周到诊数

            row = sheet.getRow(9);
            row.getCell(5).setCellValue(thisMonthOrderNumber);//本月预约数
            row.getCell(7).setCellValue(thisMonthVisitsNumber);//本月到诊数

            int rowNum = 12;
            for (Map map : hotSetmeal) {//热门套餐
                String name = (String) map.get("name");
                Long setmeal_count = (Long) map.get("setmeal_count");
                BigDecimal proportion = (BigDecimal) map.get("proportion");
                row = sheet.getRow(rowNum++);
                row.getCell(4).setCellValue(name);//套餐名称
                row.getCell(5).setCellValue(setmeal_count);//预约数量
                row.getCell(6).setCellValue(proportion.doubleValue());//占比
            }

            //使用输出流进行表格下载,基于浏览器作为客户端下载
            OutputStream out = response.getOutputStream();
            response.setContentType("application/vnd.ms-excel");//代表的是Excel文件类型
            response.setHeader("content-Disposition", "attachment;filename=report.xlsx");//指定以附件形式进行下载
            workbook.write(out);


            out.flush();
            out.close();
            workbook.close();
            return null;
        } catch (Exception e) {
            return new Result(false, MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }
}
